Fix up all the easy virtual ... SK_OVERRIDE cases.

experimental/PdfViewer/src/SkPdfRenderer.cpp

Index: experimental/PdfViewer/src/SkPdfRenderer.cpp
diff --git a/experimental/PdfViewer/src/SkPdfRenderer.cpp b/experimental/PdfViewer/src/SkPdfRenderer.cpp
index 35e6e060add4c9d5d83a4d908b8217fd72aa8bad..037606694e3de76a656ecbba75ce8b96dd6810fd 100644
--- a/experimental/PdfViewer/src/SkPdfRenderer.cpp
+++ b/experimental/PdfViewer/src/SkPdfRenderer.cpp
@@ -212,8 +212,8 @@ public:
     explicit PdfInlineImageLooper(SkPdfTokenLooper* parent)
         : INHERITED(parent) {}
 
-    virtual SkPdfResult consumeToken(PdfToken& token) SK_OVERRIDE;
-    virtual void loop() SK_OVERRIDE;
+    SkPdfResult consumeToken(PdfToken& token) SK_OVERRIDE;
+    void loop() SK_OVERRIDE;
 
 private:
     typedef SkPdfTokenLooper INHERITED;
@@ -224,8 +224,8 @@ public:
     explicit PdfCompatibilitySectionLooper(SkPdfTokenLooper* parent)
         : INHERITED (parent) {}
 
-    virtual SkPdfResult consumeToken(PdfToken& token) SK_OVERRIDE;
-    virtual void loop() SK_OVERRIDE;
+    SkPdfResult consumeToken(PdfToken& token) SK_OVERRIDE;
+    void loop() SK_OVERRIDE;
 
 private:
     typedef SkPdfTokenLooper INHERITED;